Smatree 3pcs Long Alumunium Thumbscrew for Gopro Session, Hero 7/6/5/4/3+/3/2/1/GoPro hero 2018, (Black) Aluminum Thumbscrew, High quality stainless Steel Acorn Nut, High-Strength Direct replacement for Gopro camera. A small rubber ring is good for preventing abrasion, yet it is not essential for everyone so put them away when you don't need it. Color:Black. The length of Thumbscrew is about 2.2inches Package: 3 x Long Thumbscrew with Steel Acorn Nut